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Summary IEB/NSC - Geo - Mapwork £4.49   Add to cart
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Summary

Summary IEB/NSC - Geo - Mapwork
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  • Module
  • Geography
  • Institution
  • 12th Grade

Map work Techniques • applying map skills and techniques: scale, contours, cross-sections, position, distance, area • direction: magnetic north, true north, bearing and concept of magnetic declination • grid referencing • map and photo interpretation, including: reading and analysis of ...

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Document information

  • June 28, 2023
  • 17
  • 2021/2022
  • Summary

Subjects

  • mapwork

Written for

  • 12th Grade
  • Geography
  • 204
All documents for this subject (228)

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Content preview

Mapwork
1. Types of maps
2. Types of symbols
3. Map code
4. Co-ordinates
5. Scale
6. Speed, distance, time
7. Mapwork and photo interpretation
8. Direction
9. Bearing
10. Magnetic declination
11. Magnetic bearing
12. Area


Happy studying!

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Types of maps


Types of maps Description

Topographical - Most accurate - Produced from detailed
land surveys and ariel photographs
- Has both natural features and
man-made
- Scale 1:50 000 (divide by 2)




Cadastral - Property boundaries or administrative
boundaries
- If topographical information is also
included on the map then it’s called
topocadastral




Orthophoto - Contour lines and symbols and lines are
added to an aerial photograph.
- For detailed planning
- Scale: 1:10 000




Isopleth - Isolines join points with equal values so
these maps show contours that join
points of equal value.




Thematic - Information on particular themes such
as agriculture, urban growth, poverty,
tourism, etc.
- Thematic maps can be drawn as
choropleth maps which contain areas
that are shaded, coloured or
cross-hatched to show the value of that
area in relation to the theme of the map

, 3




Types of symbols


Types of symbol Description

Point symbols Used to show features on a map that are too small to be shown in detail.

Linear symbols Used for features which are linear in shapes such as roads, rivers, and
railways

Area symbols Used for features that cover a large area




Map symbols that represent real-life features and objects.


• Color specific:
- Green (vegetation); Brown (contours); Blue (water);
- Red (Human); Grey & Black (Human) & White (natural veld).
• Symbol Specific:
- Point; Line; and Area

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